Time-switch.



V. G. JENSEN.

TIME SWITCH.

APPLICATION FILED AUG. 22, 1913.

Patented June 2, 1914.

r. O t n e V n Vidal Witnesses Attorneys VICTOR Gr. JENSEN, OF CHICAGO, ILLINOIS.

TIME-SWITCH.

Application filed August 22, 1913.

Specification of Letters Patent.

PatentedJune 2, 1914.

Serial No. 786,049.

To all whom it may concern Be it known that I, VIoToR Gr. JENSEN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Time-Switch, of which the following is a specification.

This invention relates to time switches for use in connection with electric lighting circuits and the like, one of its objects being to provide a simple and eflicient switch of this character which can be installed easily in connection with ordinaryconduit work and which, after being installed, does not necessitate disturbing the original wires in order to set the switch.

A further object is to provide a time switch, the working parts of which are located in a casing and which will not operate while the door of the casing is open but can only operate while the door is closed.

A further object is to provide a time switch, the parts of which can be easily set with one hand and which will accurately indicate, while the door is closed, whether or not the parts are set.

A further object is to provide a time switch which can be installed permanently without injury to the wires or adjacent structure and which can be safely employed with any voltage.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawings the preferred form of the invention has been shown.

In said drawings :Figure 1 is a front elevation of the time switch, a portion of the door of the casing being broken away. Fig. 2 is a side elevation of the upper portion of the casing and of the timepiece thereon. Fig. 3 is a central vertical section through the casing, a portion of the timepiece being shown partly in section and partly in elevation. Fig. 4 is a plan view of a portion of the cross bar of the knife switch and showing a portion of the spring extending therethrough.

Referring to the figures by characters of reference 1 designates a casing preferably formed of metal and this casing has a slot 2 in one side wall thereof adjacent its upper end. A door 3 is hingedly connected, as at 4:, to one side of the casing and the top of this door is formed with an apron 5 constituting a support for a timepiece 6, preferably in the form of an ordinary alarm clock. This timepiece may be secured to the apron in any suitable manner, as by forming an opening 7 in the bottom thereof for the reception of an L-shaped bolt 8 which is secured to the apron 5. By tightening this bolt, the back of the clock casing and the legs extending from said casing can be caused to bind tightly upon the apron 5, this being due to the fact that bolt 8 is located between the legs of the clock and the back thereof, as will be apparent by referring to Fig. 2.

Arranged within the casing 1 upon the back thereof is an ordinary knife switch 9 having a cross bar 10 formed of insulating material and a spring 11 is secured to the base 12 of the switch in any suitable manner, as by means of a hooked bolt 13. This spring has an elongated finger 14 which extends through an opening 15 in the middle portion of bar 10 and projects upwardly beyond the bar. A block 16 is secured to one side of the casing and pivotally connected thereto is a lever 17 which extends transversely within the casing 1 and projects through the slot 2. V hen the switch is set, the spring finger 14 connected thereto is adapted to project between the lever 17 and the back of the casing 1 and, by pressing on this lever 17, serves to bind the lever against one wall of slot 2 and thus hold the lever supported in elevated position, as shown by full lines in Fig. 1. A rod 18 is pivotally connected to lever 17 and extends through an opening 19 in the top of casing 1 and is provided, at its upper end, with a laterally extending finger 20 adapted to project into the path of a tripping finger 21 which is revoluble with the winding stem 22 of the alarm of clock 6.

It will be apparent that when the door 3 is closed, the finger 21 is supported in a position where it will engage and lift the finger 20 when the stem 22 begins to rotate in one contact with door 8 and thus holds the switch out of contact with the cover. Consequently there is no danger of short circuiting. After the switch has been automatically shiftedin the manner described, the lever 17 re mains supported by finger 21 and rod 18 as indicated by dotted lines in Fig. 1 and by glancing at the casing it will thus be seen that the apparatus is not set. When it is desired to reset the apparatus the door 3 is opened and this causes the clock 6 to swing forwardly and laterally, thereby moving the finger 21 away from the rod 18 and bringing the back of the clock into position where it can be viewed readily by the operator. The switch is pressed back into engagement with its contact, after first raising lever 17 to its uppermost position and said lever is then swung downwardly so as to extend in front of the spring finger 14:. As soon as this finger is released it will bear against lever 17 and support it in its inter mediate position. The alarm of the timepiece is then wound after which the door 3 is shut, this bringing the timepiece to the position shown in Figs. 1 and 2 so that,

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, 1

when the stem 22 begins to rotate at the proper time finger 21 will again engage finger 20 and thus the operation will be repeated as before. In setting the switch the upper end portion of the spring finger 14: can be used as a handle.

l/Vhat is claimed is 2- The combination with a casing, a switch therein, and a spring engaging the switch for holding said switch normally open, said spring including a finger, of a lever mounted in the casing and projecting therebeyond, said lever normally engaging the finger to hold the switch closed, a door to the casing and constituting means, when closed, for preventing closing of the switch, a timepiece movable with the door and having a time controlled tripping device, and means connected to the lever and adapted to be engaged by the tripping device solely when the door is closed, for shifting the lever out of ngagement with the finger, the projecting end of said lever constituting means for indicating the position of the switch.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two Witnesses.

VICTOR G. JENSEY.

WVitnesses:

A. P. JENSEN, JAY Bonus.

Washington, D. C. 

